Bloomberg Reports: 10 Most Energy Efficient U.S. States

Dec 16, 2013 2:40 PM ET

The American Council for an Energy-Efficient Economy (ACEEE) yesterday issued its annual scorecard for each state based on multiple factors, including reductions in greenhouse gas, energy codes for buildings and switching to cleaner fuels. reports on the 10 Most Energy Efficient U.S. States. See if your state is in the ranks!